Electronic cigarette



FIG. 1 is a front elevational view of an electronic cigarette showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a top front perspective view thereof; and,

FIG. 7 is a bottom front perspective view thereof.

The broken lines shown in ail Figs. form no part of the claimed design. 

CLAIM The ornamental design for an electronic cigarette, as shown and described. 